I need to check if your current power supply can support a higher GPU.
I need to check if your current power supply can support a higher GPU.
I plan to replace my GPU with a 5070 Ti, possibly moving from a 3070 FE. I currently own the RMx Series™ RM750x — a 750 Watt 80 PLUS® Gold Certified Fully Modular PSU. I’m not sure how long it’s been since I built the PC, but it’s around 4 to 5 years old. It seems I might need an adapter because my current PSU doesn’t match the connector requirements. My main concern is whether upgrading the PSU is necessary if I switch GPUs. There are adapters available, but I’m worried about safety. Also, I’m concerned about the performance impact of using a PCIe 4.0 motherboard with a 5070 Ti GPU. It’s been a bit of a stressful situation trying to prepare for BF6, and I’ve already experienced some issues during testing.
RM750x
Is that the model you're referring to? If so, it appears to be a unit from the past, around 4 to 5 years old. It comes with a 10-year warranty. Given the demands of the RTX 3000 series, especially its high transient power spikes, you might still be okay with your current setup, though you should keep an eye on it.
Regarding your connectors, most RTX5070Ti models include an adapter or harness for PCIe connections to a 12V-2x6 setup. Even without the original harness, if you own the unit linked above—the Type-4 variant—you can use this replacement cable:
https://www.corsair.com/us/en/p/pc-...n-...cp-8920286
Yeah that's my PSU. I got it when I built my PC about 4-5 years ago. It was my first PC, so replacing a PSU makes me nervous—I completely forgot how to do it. So you think buying a new one would be better?
I was also reading that I should use separate cables for the GPU. That adapter is fine to get and safe?
Would it be better to purchase a new PSU for peace of mind?
The adapter is acceptable and safe to use.
I would prefer the harness that comes with the GPU.
If you're buying a concurrent generation PSU, you'll likely end up with a native 12v-2x6 harness.
Sorry I'm not very clear. If I bought a new PSU, do I just need two cables from the PSU to the GPU without using the adapter that came with the 5070 Ti? I currently have a cable from the PSU to the adapter that came with the 3070, was that the wrong setup?
I wouldn’t worry about it if I were you.
Your PSU is still under warranty and should work fine.
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@Lutfij mentioned the GPU will include an adapter, allowing you to use your existing PSU.